Maybe they need to install multiple coolers in a sequence to the entry of the exhaust and intake? So its like you have a guided air flow with these coolers as b

Maybe they need to install multiple coolers in a sequence to the entry of the exhaust and intake? So its like you have a guided air flow with these coolers as boosters to push air in 4 possible directions to the exhaust port. Manufacturers will probably have to make sure the chassis of the gadget is air tight to increase efficiency.